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For the given concentration cell Cu(s...

For the given concentration cell
` Cu(s)|Cu^(2+) (C_2 M) || Cu^(2+)(C_1 M) |Cu(s)`
Gibbs energy `triangle`G is negative if:

A

`p_(1)=p_(2)`

B

`p_(1)gtp_(2)`

C

`p_(2)gtp_(1)`

D

None of these.

Text Solution

Verified by Experts

The correct Answer is:
C
It is a concentration cell reversible w.r.t. anion
`2Cl^(-)(0.1M)rarrCl_(p_(1))+2e^(-)`
`Cl_(2)(p_(2))+2e^(-)rarr2Cl^(-)(0.1M)`
`Cl_(2)(p_(2))+2e^(-)rarr2Cl^(-)(0.1M)`
`Cl_(2)(p_(2))rarrCl_(2)(p_(1))`
`E_("Cell")=-(0.0591)/(5)"log"(p_(1))/(p_(2))`
`=(0.0591)/(5)"log"(p_(1))/(p_(1))`
`E_("cell")gt0` if `p_(2)gtp_(1)`
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